A mesmerizing simulation of a baby’s development inside the womb has captivated online viewers. While many of us learned about fetal growth in school, this video has surprised those who may not have paid close attention.
Posted by ‘Mommy’s Touch’ on Instagram, the simulation traces a baby’s progress from week three to week 40, offering a vivid, detailed depiction that has left viewers in awe.
After going viral on Twitter via ‘non aesthetic things,’ the video sparked various reactions. Some users marveled at the experience, with one commenting, “No wonder babies cry when born—they’re leaving a warm, cozy world.” Others joked about “where the Stork is” or expressed amazement, wondering, “How do they flip themselves?”
So, what is the science behind fetal development?
Pregnancy is divided into three trimesters. During the first 12 weeks, the fertilized egg transforms from a cell cluster into a developing fetus with recognizable human features.
By the eighth week, it’s referred to as a fetus, and rapid growth is shown by the third month. By week 12, biological gender is determined, though it won’t be visible until later ultrasounds, often around the 20-week mark.
Around month five, many mothers begin feeling fetal movements, and by 24-29 weeks, most babies turn to a vertical position, sometimes breech, but typically shift head-down by 30-32 weeks. As lungs develop, week 33 brings the final stages of growth.
According to the Cleveland Clinic, the last month is focused on brain development and preparing for birth.